Nanofluid flow and shear layers between two parallel plates: a simulation approach

Abstract

The impact of presence of nano-scale particles inside a flow between two flat plates which known as Poiseuille flow is numerically analyzed. Nanofluids have been investigated in the past few years mainly by considering the heat transfer aspect in a fully developed section of internal flows, rather than detailing the hydrodynamic and thermal developing viewpoint of nanofluid. In other words, this research will focus on the fundamental understanding of developing nanoparticles flows in hydrodynamic and thermal boundary layers in the entrance region. Therefore, flow between two flat plates is numerically studied here by injecting and tracking nanoparticles from inlet to outlet of the channel. The flow is kept in the laminar regime with uniform heat flux applied on the plates. ANSYS Fluent 19.3 is used to numerically solve the continuity and momentum equations, as well as discrete phase modeling for particles. The results showed three major stages in vorticity development in the entrance region. It was found that Brownian motion plays an important role in nanoparticles migration, and close to the wall with the involvement of Thermophoresis. Also, nanoparticles can deviate from flow layers after merging boundary layers.

Effect of Inclined Magnetic Field on the Entropy Generation in an Annulus Filled with NEPCM Suspension

“…e heat capacity ratio defined by equation ( 7) f: e nondimensional fusion function defined by equation (8) Da:…”

“…Nanofluids can be produced by adding the nanosized particles (such as copper and silver) into the base fluids (i.e., oils, water, and so on). Many researchers scrutinized the effects of conventional nanofluids on fluid flow in different cases [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Recently, a new type of nanofluids has been constructed using phase change materials (PCMs) which are known as NEPCMs.…”

Entropy Analysis for Cilia-Generated Motion of Cu-Blood Flow of Nanofluid in an Annulus

“…For instance, Waini et al [3] used the Matlab bvp4c solver to investigate the motion of hybrid nanofluids (such as copper and alumina, categorized as hybrid nanoparticles) towards a shrinking/stretching cylinder. Mahdavi et al [4] examined the effects of nanoparticles on the Poiseuille flow. Gul et al [5] provided the Homotopy analysis method (HAM) solutions for the three-dimensional (3D) nanofluid transport between a cone and a disk in a rotating system.…”

Effect of Straight, Inclined and Curved Fins on Natural Convection and Entropy Generation of a Nanofluid in a Square Cavity Influenced by a Magnetic Field

“…The enhancement of heat transfer rate (HTR) by adding nanofluids is one motivation behind these studies. Several types of research have focused on the HTR of nanofluids [9][10][11][12][13][14][15][16][17].…”